CONTENTS. V 



Page. 

 27, 28, 29. On crystalizable acetic acid — On the separation of an- 

 timony from tin — Method of destroying the worms which 

 attack fruit trees, - - - - - 197 



30. A brilliant and useful varnish for articles of cast iron, - 199 



31, 32. Recipe for the beverage called imperial pop — Heat by 



phosphorus and iodine, .... 2OO 



NUMBER II. 



Art. I. Historical Notice of the Life and Writings of M. Des- 

 fontaines ; by A. P. De Candolle, Prof, of Nat. Hist. 

 Acad. Geneva, - - - - - 201 



II. Dissection of the Eye of the Streaked Bass, (Perca No- 

 bilis vel Mitchelli,) with Observations on the accommo- 

 dation of the Eye to Distances ; by W. C. Wallace, 

 M. D., Surgeon to N. Y. Institution for the BHnd, 216 



III. New mode of constructing the Mercurial Barometer ; by 



J. L. RiDDELL, A. M., Lecturer on Chemistry, - 223 



IV. Apparent Diminution of Weight, in certain circumstan- 



ces ; by Prof. W. E. A. Aikin, ... 224 

 V. Transmission of Radiant Heat through different solid and 

 liquid bodies. — An abstract of a statement of the results 

 obtained by M. Melloni, from the Jour, of the Institute, 228 

 VI. Caricography; by Prof. C. Dewey, - - 236 



VII. Contributions to Chemical Science ; by Prof. W. W. 



Mather, ------ 241 



VIII. On the methods of determining and calculating the spe- 

 cific heats of certain solids, with some precautions to 

 be observed in the experiments ; by Prof. Walter R. 

 Johnson, . . - . . 267 



IX. On the Condition of Vesuvius in July, 1834; by James 



D. Dana, V- S. Navy, - - - - 281 



X. On the Propagation of Fruit Trees, Vines, &c. - 288 

 XI. On the construction of the Barometer, and other Philo- 

 sophical lustruments in this coimtrj^ by James Green, 

 Philosophical Instrument Maker, Baltimore, - 292 



XII. On the Existence and Preparation of the Bi-Malate of 

 Lime in the Berries of the Sumach ; by W. B. Rogers, 

 Prof. Chem. and Nat. Phil. William and Mary College, 294 

 XIII. Apparatus for analyzing Calcareous Marl and other Car- 

 bonates ; by William B. Rogers, Prof, of Chem. and 

 Nat. Phil, in William and Mary College, - - 299 



